Multithreaded XviD - official thread

[LigH]

"Demuxer: mpeg4es" -- this is an MPEG-4 "Elementary Stream". So you got the "raw" video, but not embedded in an AVI container?!

Please, please, pretty please -- post a "MediaInfo" report!

[PiPPoNe92]

Mediainfo report:

General
Count : 246
Count of stream of this kind : 1
Kind of stream : General
Kind of stream : General
Stream identifier : 0
Count of video streams : 1
Video_Format_List : MPEG-4 Visual
Video_Format_WithHint_List : MPEG-4 Visual
Codecs Video : MPEG-4 Visual
File name : film
File extension : avi
Format : MPEG-4 Visual
Format : MPEG-4 Visual
Format/Extensions usually used : mp4v
Codec : MPEG-4 Visual
Codec : MPEG-4 Visual
Codec/Extensions usually used : mp4v
File size : 303534080
File size : 289 MiB
File size : 289 MiB
File size : 289 MiB
File size : 289 MiB
File size : 289.5 MiB
File creation date : UTC 2010-09-02 13:49:31.140
File last modification date : UTC 2010-09-02 17:21:27.437

Video
Count : 133
Count of stream of this kind : 1
Kind of stream : Video
Kind of stream : Video
Stream identifier : 0
Format : MPEG-4 Visual
Format profile : Streaming Video@L1
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, BVOP : Yes
Format settings, QPel : No
Format settings, QPel : No
Format settings, GMC : 0
Format settings, GMC : No warppoints
Format settings, Matrix : Default
Format settings, Matrix : Default
Codec : MPEG-4V
Codec : MPEG-4 Visual
Codec/Family : MPEG-4V
Codec profile : Streaming Video@L1
Codec settings : BVOP
Codec settings, BVOP : Yes
Codec settings, QPel : No
Codec settings, GMC : 0
Codec settings, GMC : No warppoints
Codec settings, Matrix : Default
Width : 608
Width : 608 pixels
Height : 256
Height : 256 pixels
Pixel Aspect Ratio : 1.000
Display aspect ratio : 2.375
Display aspect ratio : 2.35
Frame rate : 25.000
Frame rate : 25.000 fps
Resolution : 24
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Scan type : Progressive
Interlacement : PPF
Interlacement : Progressive
Writing library : XviD0057
Writing library : XviD 57
Writing library/Name : XviD
Writing library/Version : 57

[hajj_3]

what kind of speed improvements are people getting on core2 cpu's with the latest versions of xvid 1.3.0 compared to 1.2.2? Is there any eta on 1.3.0 final?

[LigH]

@ PiPPoNe92:

It may have the extension ".avi", but it is a raw MPEG-4 Video stream in your case.

If it was a RIFF AVI file, MediaInfo would have reported e.g.:

...
Format : AVI
Format : AVI
Format/Info : Audio Video Interleave
Format/Extensions usually used : avi
Format_Commercial : AVI
Format profile : OpenDML
InternetMediaType : video/vnd.avi
...

So for some reason, your xvid_encraw call did not embed the result into an AVI container.

[Sharktooth]

or you renamed the xvid output to .AVI...

[LigH]

But in his reported command lines, the option "-avi" was used?! ...

[PiPPoNe92]

Yes, in my command line I have "-avi "First_pass.avi""

[Sharktooth]

some xvid_encraw builds need aviwriter.dll in the same folder as xvid_encraw or system(32) folder.

[PiPPoNe92]

aviwriter.dll already there was in same folder as xvid_encraw.

P.S. I seen with small input filesize, in output I got .avi files XVID. Only with movie I got mp4v files...

[Sharktooth]

could you please download the xvid package from here (http://megui.org/auto/xvid_encraw-2009-05-30.zip) (and eventually replace the xvidcore.dll with version 1.3.0 if you prefer), unzip it to a folder and try with that version?

[s4]

Hi guys!
Is there any way to boost xvid encoding speed on i7? Trying to encode from an 1080p AVC source with the dgavc import in avs and a simple lanzcos resize but i only got 20fps for pass1
http://i51.tinypic.com/24ys9kw.jpg

Xvid thread locked to 2, x264 running on the other 6. When im running xvid in auto threads the speed is same, using AS@L5 profile at 32bit xp system, xvid 1.2.2+virtualdub but its weird.
On a prev box which was "only" Q8200 i got more than 20fps+ while encoding so i dont understand why is this limit with i7.
Also tried xvid_encraw w/o MT filter too but it wont boost the speed.
Any idea?

[Rumbah]

If you're resizing with Avisynth try splitting your resize to
Spline16Resize(720,last.height)
Spline16Resize(last.width, 576)
with your resize filter and resolution of course. With that I get a 10% speed boost.

In addition to that try it without the x264 process. In my tests xvid gets a massive loss of speed if there are other apps running. On my quad core encoding with xvid uses only 3 cores and I get about 40 fps. If I start running a lame process using the last core the xvid encoding speed drops from 40 fps to 2-3 although it still has 3 cores to use.

[Chabb]

When I expect big FPS while encoding,
I prefer to use ffdshow decoder+resizer instead of dgavc+avisynth.
Even with 1080p source it's significantly faster.

[henryho_hk]

To maximize CPU usage, I do a 2.05-pass XviD encode with assistance of some scripts:
1) split the movie into 4 (quad-core) or 6 (hexacore) using trim()
2) run 5% compressibility tests over these parts (dun worry, it runs very quickly)
3) from the compressibility test figures, calculate the bitrate required for each part
4) do a normal 2-pass on the parts at the same time.

For my quadcore, I will split the job into four single-threaded tasks. For your hexacore, you can try running six single-threaded tasks or three dual-threaded tasks. If your harddisk is fast enough, six single-threaded tasks will be faster. Otherwise, your harddisk will be stressed and the physical disk read/write will become the bottleneck.

[srk3461]

hey guys... i was wondering is there any GUI for xvid 1.2.1 or any other versions, w/o installing the actual codec!?

[LigH]

Any application encoding to Xvid will use the Xvid codec. In one or another format. Maybe - what you want to avoid - as installed VfW codec (usual AVI editors); maybe as called encoder executable (some xvid_encraw-using GUIs like MeGUI); maybe as linked library (Avidemux).

[Selur]

also a lot of mencoder and ffmpeg builds include the Xvid libraries for encoding,.. so all GUIs that use ffmpeg/mencoder are a potential hit for you ;)